*{
	padding: 0;
	margin: 0;
}
ul{
	list-style: none;
}
.clear{
	clear: both;
}
a{
	text-decoration: none;
}
body{
	background-color: beige;
}
.all{
	width: 1100px;
	margin: 0 auto;
}
header{
	line-height: 200px;
	background-image: url(../img/banner.jpg);
	height: 200px;
	background-position: 0 20%;
	text-align: center;
}


/* .nav_ul{
	width: 800px;
	height: 40px;
	margin: 0 auto;
} */
/* nav ul li{
	float: left;
	margin-left: 40px;
	display: block;
	width: 80px;
	height: 40px;
}
nav ul li a{

}
.nav_li_one{
	border-bottom: red solid 2px;
} */
nav{
	background-color: white;
	height: 40px;
	line-height: 40px;
	text-align: center;
}
nav ul{
	display: inline-block;
}
nav ul li{
	padding-left: 20px;
	padding-right: 20px;
	float: left;
}
nav ul li:hover{
	border-bottom: orange 2px solid;
}
nav ul li a{
	color: black;
}
nav .nav_li_one{
	border-bottom: orange 2px solid;
}


section{
	width: 1100px;
	background: #ebebeb;
	padding-top:30px;
	height: 1350PX;
}
.main{
		padding-bottom: 30px;
	text-align: center;
	float: left;
	width: 730px;
}
.main article{
	float: right;
	padding-top: 20px;
	text-align: center;
	padding-left: 20px;
	padding-right: 20px;
	padding-bottom: 40px;
	margin-top: 20px;
	background-color: white;
	width: 600px;
}
.main article h3{
	font-size: 22px;
}
.author{

	margin-top: 20px;
	font-size: 12px;
}
.author span{
	color: #FFA500;
}
.article_content{
	margin-top: 30px;
	text-align: left;
}

.main article input{
	margin-top: 30px;
	background-color: #FFA500;
	border: none;
	padding: 10px;
	border-radius: 10%;
	float: left;
}
.main article hr{
	margin-top: 30px;
	border: 0.5px solid gainsboro;
}
.article_bottom{
	color: gray;
	margin-top: 30px;
	float: left;
}
.section_nav input{
	
	margin-top: 30px;
	background-color: #FFA500;
	border: none;
	padding: 10px;
}
.section_nav_rightbutton{
	font-size: 19px;
}

aside{
	padding-top: 20px;
	float: left;
	width: 350px;
	padding-left: 20px;
}
.contact{
	padding-right: ;
	padding-left: 20px;
	width: 260px;
	background-color: white;
	padding-bottom: 20px;
}
.contact_p1{
	font-size: 20px;
	padding-top: 10px;
	padding-bottom: 10px;

}
 .contact_hr1{
	float: left;
	border: 1px #e67e22 solid;
	width: 50px;
}
.contact_hr2{
	float: left;
	border: 1px #ebebeb solid;
	width: 200px;
}
.lianxi p{
	margin-top: 20px;
}
.lianxi .contact_p_color{
	color: #E67E22;
}


.download{
	margin-top: 30px;
	padding-right: ;
	padding-left: 20px;
	width: 260px;
	background-color: white;
	padding-top: 20px;
	padding-bottom: 20px;
}
.download p{

	font-size: 20px;
	padding-top: 10px;
	padding-bottom: 10px;
}
.download input{
	color: white;
	font-size: 12px;
	margin-top: 20px;
	border: none;
	background-color: #E67E22;
	padding: 8px 40px;
}

footer{
	text-align: center;
	color: #555555;
	background-color: black;
	height: 60px;
	line-height: 60px;
}